55 lines
2.8 KiB
LLVM
55 lines
2.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
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; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=2 -S < %s | FileCheck %s --check-prefixes=CHECK,TUNIT
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; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,CGSCC
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;
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; FIXME: The GEP + BC + GEP solution we create is not great but correct.
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declare void @use(i32* nocapture readonly %arg)
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define void @caller() {
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; TUNIT-LABEL: define {{[^@]+}}@caller() {
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; TUNIT-NEXT: entry:
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; TUNIT-NEXT: [[LEFT:%.*]] = alloca [3 x i32], align 4
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; TUNIT-NEXT: [[ARRAYDECAY:%.*]] = getelementptr inbounds [3 x i32], [3 x i32]* [[LEFT]], i64 0, i64 0
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; TUNIT-NEXT: [[TMP0:%.*]] = bitcast i32* [[ARRAYDECAY]] to [3 x i32]*
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; TUNIT-NEXT: [[DOTCAST:%.*]] = bitcast [3 x i32]* [[TMP0]] to i32*
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; TUNIT-NEXT: [[TMP1:%.*]] = load i32, i32* [[DOTCAST]], align 4
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; TUNIT-NEXT: [[DOT0_1:%.*]] = getelementptr [3 x i32], [3 x i32]* [[TMP0]], i64 0, i64 1
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; TUNIT-NEXT: [[TMP2:%.*]] = load i32, i32* [[DOT0_1]], align 4
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; TUNIT-NEXT: [[DOT0_2:%.*]] = getelementptr [3 x i32], [3 x i32]* [[TMP0]], i64 0, i64 2
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; TUNIT-NEXT: [[TMP3:%.*]] = load i32, i32* [[DOT0_2]], align 4
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; TUNIT-NEXT: call void @callee(i32 [[TMP1]], i32 [[TMP2]], i32 [[TMP3]])
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; TUNIT-NEXT: ret void
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;
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; CGSCC-LABEL: define {{[^@]+}}@caller() {
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; CGSCC-NEXT: entry:
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; CGSCC-NEXT: call void @callee(i32 undef, i32 undef, i32 undef)
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; CGSCC-NEXT: ret void
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;
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entry:
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%left = alloca [3 x i32], align 4
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%arraydecay = getelementptr inbounds [3 x i32], [3 x i32]* %left, i64 0, i64 0
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call void @callee(i32* %arraydecay)
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ret void
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}
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define internal void @callee(i32* noalias %arg) {
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; CHECK-LABEL: define {{[^@]+}}@callee
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; CHECK-SAME: (i32 [[TMP0:%.*]], i32 [[TMP1:%.*]], i32 [[TMP2:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[ARG_PRIV:%.*]] = alloca [3 x i32], align 4
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; CHECK-NEXT: [[ARG_PRIV_CAST:%.*]] = bitcast [3 x i32]* [[ARG_PRIV]] to i32*
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; CHECK-NEXT: store i32 [[TMP0]], i32* [[ARG_PRIV_CAST]], align 4
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; CHECK-NEXT: [[ARG_PRIV_0_1:%.*]] = getelementptr [3 x i32], [3 x i32]* [[ARG_PRIV]], i64 0, i64 1
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; CHECK-NEXT: store i32 [[TMP1]], i32* [[ARG_PRIV_0_1]], align 4
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; CHECK-NEXT: [[ARG_PRIV_0_2:%.*]] = getelementptr [3 x i32], [3 x i32]* [[ARG_PRIV]], i64 0, i64 2
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; CHECK-NEXT: store i32 [[TMP2]], i32* [[ARG_PRIV_0_2]], align 4
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; CHECK-NEXT: [[TMP3:%.*]] = bitcast [3 x i32]* [[ARG_PRIV]] to i32*
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; CHECK-NEXT: call void @use(i32* noalias nocapture noundef nonnull readonly align 4 dereferenceable(12) [[TMP3]])
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; CHECK-NEXT: ret void
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;
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entry:
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call void @use(i32* %arg)
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ret void
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}
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